void
CPersStream::PersStream()
{
if (PR_htValid) {
switch (PR_htInst) {
// Main entry point from Host (htmain call)
// P_rcvData => 0 (init)
case STRM_RECV:
{
if (RecvHostDataBusy()) {
HtRetry();
break;
}
// Receive data until we see a DataMarker from the host
if (RecvHostDataMarker()) {
HtContinue(STRM_RTN);
} else {
// Store received data into private variable recvData
P_rcvData = RecvHostData();
HtContinue(STRM_ECHO);
}
}
break;
case STRM_ECHO:
{
if (SendHostDataBusy()) {
HtRetry();
break;
}
// Echo data to back host
SendHostData(PR_rcvData);
HtContinue(STRM_RECV);
}
break;
case STRM_RTN:
{
if (SendReturnBusy_htmain()) {
HtRetry();
break;
}
// Return number of bytes seen to the host
SendReturn_htmain();
}
break;
default:
assert(0);
}
}
}
void
CPersEcho::PersEcho()
{
if (PR_htValid) {
switch (PR_htInst) {
case ECHO_INIT:
{
if (ReadMemBusy()) {
HtRetry();
break;
}
// Set address for reading memory response data
P_arrayMemRdPtr = 2;
P_dataCnt = 0;
sc_uint<MEM_ADDR_W> memRdAddr = (sc_uint<MEM_ADDR_W>)r_arrayAddr;
// Issue read request to memory
ReadMem_arrayMem(memRdAddr, 2);
ReadMemPause(ECHO_DATA);
}
break;
case ECHO_DATA:
{
if (ReadMemBusy() || SendReturnBusy_echo() || RecvHostDataBusy() || SendHostDataBusy()) {
HtRetry();
break;
}
// handle adding value to popped queue data and pushing to output queue
if (RecvHostDataMarker()) {
SendHostDataMarker();
// Return to host interface
SendReturn_echo(P_dataCnt);
} else {
uint64_t inData = PeekHostData();
RecvHostData();
uint64_t outData = inData + GR_arrayMem.data;
SendHostData(outData);
P_dataCnt += 1;
// Calculate memory read address
sc_uint<MEM_ADDR_W> memRdAddr = (sc_uint<MEM_ADDR_W>)(r_arrayAddr + (P_dataCnt << 3));
// Issue read request to memory
ReadMem_arrayMem(memRdAddr, 2);
ReadMemPause(ECHO_DATA);
}
}
break;
default:
assert(0);
}
}
}
